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https://issues.apache.org/jira/browse/YARN-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14387656#comment-14387656
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Hitesh Shah commented on YARN-3304:
-----------------------------------
Forgot to add, we use this for resource monitoring for a task within a
container. Given that we run multiple tasks within the same container, this api
stability becomes more important as YARN cannot provide the resource monitoring
functionality at the granularity that we need.
> ResourceCalculatorProcessTree#getCpuUsagePercent default return value is
> inconsistent with other getters
> --------------------------------------------------------------------------------------------------------
>
> Key: YARN-3304
> URL: https://issues.apache.org/jira/browse/YARN-3304
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Reporter: Junping Du
> Assignee: Junping Du
> Priority: Blocker
> Fix For: 2.7.0
>
> Attachments: YARN-3304-v2.patch, YARN-3304-v3.patch,
> YARN-3304-v4-boolean-way.patch, YARN-3304-v4-negative-way-MR.patch,
> YARN-3304-v4-negtive-value-way.patch, YARN-3304-v6-no-rename.patch,
> YARN-3304-v6-with-rename.patch, YARN-3304-v7.patch, YARN-3304-v8.patch,
> YARN-3304.patch, yarn-3304-5.patch
>
>
> Per discussions in YARN-3296, getCpuUsagePercent() will return -1 for
> unavailable case while other resource metrics are return 0 in the same case
> which sounds inconsistent.
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